Arbinet Names Brian Troesch as Senior Vice President for Product and Business Development

NEW YORK, NY--(Marketwire - January 6, 2010) - Arbinet
Corporation (NASDAQ: ARBX), a leading provider of telecommunications services
to fixed and mobile operators, announces today that it has named Brian Troesch as
Senior Vice President for Product and Business Development. Brian is responsible
for guiding Arbinet's Voice and Mobile product direction. Arbinet offers three
ways for carriers and service providers to originate and terminate voice traffic
across its network: thexchange™, the industry's leading marketplace for buying
and selling voice communications; Carrier Services, a traditional wholesale model;
and Private Exchange(SM) (PEX), an easy, low-risk outsourcing approach. All three
services are supported by Arbinet's intelligent routing and call query solutions.

Brian has more than fourteen years management experience in international
telecommunications and mobile data services. He most recently served as Vice
President, Americas Region, for Belgacom ICS, S.A. where he was responsible for
developing and implementing a market strategy that led to the four-fold growth of
the region's wholesale fixed and mobile voice business. Brian previously served as
Director of Business and Network Development for Edge2Net, Inc., a global VoIP and
switched telephony service provider where he managed international business
development and global VoIP network deployment. He has also held various positions
in sales and development at BellSouth Long Distance, Pacific Gateway Exchange and
U.S. Long Distance.

"Brian brings to the Arbinet leadership team a history of providing innovative
voice and data solutions to fixed, and mobile carriers and service providers,"
states Shawn O'Donnell, President and CEO of Arbinet. "He has a strong
understanding of the telecommunications marketplace and of emerging technologies
such as VoIP, IPX, Roaming Exchange and Signaling Services. His experience will
help Arbinet continue to evolve its product and service portfolio to meet the needs
of the market."

This press release may contain forward-looking statements regarding anticipated
future revenues, growth, capital expenditures, management's future expansion plans,
expected product and service developments or enhancements, discussions of strategy,
and future operating results. Various risks and uncertainties may cause Arbinet's
actual results to differ materially. Please refer to Part I, Item 1A of the
Company's Annual Report on Form 10-K, filed with the Securities and Exchange
Commission on March 16, 2009, and other filings that have been filed with the
Securities and Exchange Commission. Arbinet assumes no obligation to update any
forward-looking statements, whether as a result of new information, future events
or otherwise and such statements are current only as of the date they are made.